The SPB180-3-2517 pulley is a fundamental transmission component designed for medium-to-heavy loads and high-impact operating conditions. Compared with the SPA series, the SPB groove profile has a wid...
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The M4 Z40 spur gear is designed for heavy-duty industrial transmission systems that need high torque output and resistance to severe shock. The 40Cr alloy steel substrate combined with induction-hardened tooth surfaces gives it a very long service life even under harsh, high-load operation.
| Item | Specification |
| Module | 4 |
| Number of teeth | 40 |
| Pressure angle | 20° |
| Material | 40Cr alloy steel |
| Heat treatment | Overall quenching and tempering + induction hardening of tooth surface (hardness HRC 48-52) |
| Pitch circle diameter | 160mm |
| Outside diameter | 168mm |
| Transmission ratio | 1:1~6:1 |
| Pitch line velocity | ≤10m/s |
| Machining | Gear hobbing / gear shaping, precision-turned fit bore |
Shanghai Rentai Transmission Equipment Co., Ltd. is a manufacturer specializing in R&D, production and export of mechanical transmission components. Our main products include taper lock pulleys, taper lock bushes, timing pulleys, V-belts and timing belts. We also provide OEM & ODM custom service for non-standard transmission parts. Our factory covers over 8000 square meters, with more than 100 employees including 22 technical staff. We integrate casting, machining and finishing, equipped with CNC machines and testing instruments, with an annual casting output of 2000 tons. Supported by complete quality management system and international standards, our products are exported to Southeast Asia, Middle East, Europe and America, delivering reliable transmission solutions for global industrial clients.

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